Improvement in reversible knob-latches



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`.vvIIgLI-A'flu A. HOPKINS, or New voeu, N. Y.

` Q Letters Paten-t No. 105,334, dated July 12 1870.

IMPROVEMENT IN REvERsIBLnKNoB-LATCHES.

The Schedule referred tryin` these Letters :Patent and making `part of the same. v

Be it known that I, WILLIAM A. HOPKINS, of the city, county, and State .ofj New York, have invented .afnew and useful Improvement in ReversibleKnobi Latches, of which lthe following'is a Afull, clear, and

exact` description,reference ibeing had to the aecompanying drawing forming part of this specilication, and `in'whichm` Figure 1 represents a view ofthe exterior of alck having my improvement applied to it.; i `11`ngure2,-an exterior viewv of' the same with theY outer plate of the case removed;

`l `igur`e.3,`a transverse sectiomtakcn as indicated bythe line x a: in lig. 2; 'and Figures `4 and 5, longitudinali'aec and side views of l the reversible latch, detached..

Similar letters parts.

ot' reference indicate corresl'ionding .fln reversible latch arrangemeutaas applied `-to locks, I 3 ibrthe purpose of adapting thclatter to right or lett hand doors, and in which `the latchY has been yshot or drawn back' as a'boltby means of almob-spindle or devices connected therewith, the' reversal Aof the latch has been provided for invarious ways, including not only` the turning ofthe latch in a socket, 'but also the dtacllmentiofthelatch atits' inner end from the del `vice by which it is' operated, and whereby itis capable To this end the latch or bolt has beenlsecured in a detachable ot' being Vsecured in 4reverse positions.

manner to the. operatinglevcr by a fixed pin, and combined with a movable `bearing `within, the case, so

' thatthe'sliding of said independent bearing provides forth'e detachment of', thebolt from the lever and its removal from the case,.andrtbrits reinsertion in a reversed position.`

My invention, while it' jn'ouvides` for the reversal of n thelatcli by the detachment of it from -the operating lever, essentially differs from this arrangement, and

dispenses both with an independent vsliding bearing V,nd with a fixed pin on thcendoi-thc operating lever,

lhe invention consists in a peculiarly-constructed `slotin the inner end of the latch, in combination with' apeeuliarly-shaped locking-pintorattachment of the latch to the lever, saidpin being made 'capable of tu'rniugor adjustment fromthe exterior of the case,

Ato provide-iu a vsecure and convenient'manner for the attachment and detachment of' the latch by changing the relative positions of the lockingportion-ot' the pin and slot in the end of the latch.,-

In the accompanying Vdrawing- A represents the lockfcasc, and

B t-he outer plate thereof.

C is the locking-bolt, and

D the slidin g latch. Y

E is the hub, with itsfollowers, actuated by the knob-spindle, and

'F the operating lever, pivoted,.as at b, said leverI being under control ot' the hub VE and a spring, G, to

`effect the movement of the latch..

The-inner end ol the latch may be thinneddown,

as represented 'in tigs. 3 and 5, and has a suitablyshaped slot, H, in it, to' give it alocking and unlocking character in connection with a screwV or pin, I, made capable of turning within the operating lever F which `carries it. i y nThe head of thi'svpin I projects through the slot H, and is capable of' being rotated therein, so that a wing or lip, h, on the side ot' said head and exterior to the slotted portionI of the lat-ch, may either bc brought into line vwith a brauch, i, of the slot H, or out ot' line therewithr rlhis may be done by a screw-driver en. tered through a hole, 7.2, in the `lock-plate, `andinade to 'fit a nick in the head ot' the. pin, which latter,`

when turned so that its lip lr lies over the opening fi,

allows oif the latch I) being slipped-off the piu ando drawn ont of the Lease, and, after being'reversed, reinsertcd or 0slipped over thc pin again, when, by simply turning the pin sothat its 'locking lip h is out of linewith the opening fi, the latch is locked in its gear wit-h the operating lever F. p Vhat is here claimed,and desired to bc Letters latent, is-

' The locking slot H, with its branch t', inl the inner end of the latch D, in combination with the movable pin I, provided with a locking-lip, l1., and the operat-` ing level'll, substantially as and for the purpose herein set forth..

W. A.. HOPKINS.

vWitnesses lfunn. HAYNEs, 1t. E. RAuEAU. ,l

secured byf 

